Transcend 256GB M.2 430S SSD. It has feature of Space-saving M.2 SATA form factor (42mm) for ultra-compact computing devices. 3D NAND flash memory. DDR3 DRAM cache. SATA III 6Gb/s interface and SLC caching technology for exceptional transfer speeds. Engineered with a RAID engine and LDPC (Low-Density Parity Check) coding to ensure data integrity. Supports Device Sleep Mode (DevSleep) to prolong notebook battery life by intelligently shutting down SATA interface when not in use. Supports S.M.A.R.T., TRIM and NCQ commands.